rusum

Latin

Noun

rūsum

1. Alternative form of rūrsum
   • [98–138 CE, Velius Longus, edited by T.H.G. Keil, Liber de orthographia (Grammatici Latini; VII)‎^[1], published 1880, page 79, lines 4–6:

     sic et dossum per duo s quam per r dorsum quidam ut lenius enuntiaverunt. ac tota r littera sublata est in eo quod est rusum et retrosum.

     And in this way, some [say] "dossum" with two s's instead of "dorsum" with an r to sound gentler. But to all, r is a sunk letter in "rusum" and "retrosum".]